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When compiling with CONFIG_DEBUG_FS=n, GCC emits an unused
variable warning for pmc_atom.c because "ret" is used only
within the CONFIG_DEBUG_FS block.
This patch adds a dummy #ifdef for pmc_dbgfs_register() when
CONFIG_DEBUG_FS=n to simplify the code and remove the warning.
Signed-off-by: Martin Kelly <martkell@amazon.com>
Acked-by: "Li, Aubrey" <aubrey.li@linux.intel.com>
Cc: vishwesh.m.rudramuni@intel.com
Link: http://lkml.kernel.org/r/1410963476-8360-1-git-send-email-martin@martingkelly.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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I don't know if we really need 64 bits here but these variables are
declared as u64 and it can't hurt to cast this so we prevent any shift
wrapping.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Aubrey Li <aubrey.li@linux.intel.com>
Link: http://lkml.kernel.org/r/20140801082715.GE28869@mwanda
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Add the following interfaces to exposes PMC device state and sleep
state residency via debugfs:
/sys/kernel/debugfs/pmc_atom/dev_state
/sys/kernel/debugfs/pmc_atom/sleep_state
Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Link: http://lkml.kernel.org/r/53B0FF59.8000600@linux.intel.com
Signed-off-by: Kasagar, Srinidhi <srinidhi.kasagar@intel.com>
Reviewed-by: Rudramuni, Vishwesh M <vishwesh.m.rudramuni@intel.com>
Reviewed-by: Joe Perches <joe@perches.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Disable PMC S0IX_WAKE_EN events coming from LPC block(unused) and
also from GPIO_SUS ored dedicated IRQs (must be disabled as per PMC
programming rule), GPIOSCORE ored dedicated IRQs (must be disabled
as per PMC programming rule), GPIO_SUS shared IRQ (not necessary
since the IOAPIC_DS wake event will still work), GPIO_SCORE shared
IRQ (not necessary since the IOAPIC_DS wake event will still work).
Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Link: http://lkml.kernel.org/r/53B0FF22.5080403@linux.intel.com
Signed-off-by: Olivier Leveque <olivier.leveque@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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The Power Management Controller (PMC) controls many of the power
management features present in the Atom SoC. This driver provides
a native power off function via PMC PCI IO port.
On some ACPI hardware-reduced platforms(e.g. ASUS-T100), ACPI sleep
registers are not valid so that (*pm_power_off)() is not hooked by
acpi_power_off(). The power off function in this driver is installed
only when pm_power_off is NULL.
Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Link: http://lkml.kernel.org/r/53B0FEEA.3010805@linux.intel.com
Signed-off-by: Lejun Zhu <lejun.zhu@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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